Care and maintenance work 6.2 Fuel system z Screw the filter cartridge 2 and the water col- lecting receptacle 3 together. Wet the sealing surfaces of the filter cartridge and the water collecting receptacle with fuel. z Mount in clockwise direction. z Open the fuel stopcock and vent the system. z Check tightness after starting the engine. Venting the fuel prefilter z Loosen the vent screw 7 slightly. z Operate the pump until bubble-free fuel flows out. z Tighten vent screw 7 . . Changing the fuel prefilter cartridge z Shut off the fuel supply to the engine (with high lying tank). z Place a collecting receptacle underneath the prefilter.
z Pull out the plug of the optional water level sensor (4). z Open the water drain cock (5) and drain li- quid. z Unscrew the filter cartridge (2) together with the water collecting receptacle (3). z Unscrew water collecting vessel (3) from the filter cartridge (2). z Clean the water collecting receptacle (3) and all the available sealing surfaces with a brush and clean diesel fuel. z Oil the gaskets of the new DEUTZ original filter cartridge (2) lightly or wet with diesel fu- el. z Screw water collecting receptacle (3) to the filter cartridge (2). z Screw new filter cartridge (2) to the filter support (tightening torque: 17-18 Nm). z Connect the water level sensor (A).
z Open the fuel supply to the engine. z Vent the fuel system 6 1. Filter support 2. Filter cartridge 3. Water collecting receptacle (bowl) 4. Electrical connection 5. Drain plug 6. Fuel hand pump 7. Vent screw 8. Sealing surface A Connection possibility for electrical water level sensor (optional) Cleaning fuel prefilter/ z Close fuel stopcock. z Position fuel collecting receptacle beneath fuel prefilter. z Loosen the drain plg 5 and drain fuel/water. z Unscrew the filter cartridge 2 and the water collecting receptacle 3 in anti-clockwise di- rection and remove. Empty emulsion in the water collecting receptacle and clean the re- ceptacle. 32